William R. Costello › F-1
William R. Costello: statement of financial affairs
Data last updated: F-1 statements filed through Oct 13, 2026 (read Oct 14, 2026)
- Period
- 2025-01-01 – 2025-12-31
- Filed
- 2026-03-27
- Office
- City Council Member, City of Deer Park
- Original
- the statement on the PDC's site
Income 2
| Source | For | Whose | Amount |
|---|---|---|---|
| Billy Costello Insurance Agency Inc. Deer Park, WA | INSURANCE AGENT | Filer | $100,000–$199,999 |
| City of Deer Park Deer Park, WA | CITY COUNCIL MEMBER | Filer | $0–$29,999 |
Accounts and investments 4
| Held at / in | What | Whose | Value |
|---|---|---|---|
| US Bank | Checking | Filer | $60,000–$99,999 |
| Numerica | Checking | Filer, Spouse | $0–$29,999 |
| Numerica | Savings | Filer, Spouse | $30,000–$59,999 |
| SurePayroll 401K Plans | 401K | Filer | $30,000–$59,999 |
Businesses 1
| Business | Role | Whose |
|---|---|---|
| Billy Costello Insurance Agency Inc. Insurance Agency | owner | Filer |
Real estate 1
| Where | Whose | Assessed value | Mortgages and liens |
|---|---|---|---|
| Deer Park, WA | Filer, Spouse | $500,000–$749,999 | PennyMac USA ($200,000–$499,999) |
Street addresses are on the PDC's copy; we show the city only.
Other debts 1
| Owed to | Whose | Owed now | Terms |
|---|---|---|---|
| Bank of America | Filer | $30,000–$59,999 | 1071/Month |
Values are the F-1's brackets (exact for gifts). Includes a spouse's or domestic partner's interests.